Automatic feed for punch presses



- J. MARIAN.

AUTOMATlC FEED FOR PUNCH PRESSES.

- Patented Feb. 28, 1922.

APPLICATION FILED APR) 9, 1921.

A I i,

2 Z 2 //VVE/VTOR To all whom it may concern.

JOHN minim, ornimmnosn; onnn mxqv AUTOMATIC. E es e ews =1,4os7,e99.

'Arnl cetio l d Ap Be it known that "I,' JOHN MARIAN, a citizen of Czernowitz, Bukowina; formerly a part of the Empire of Anstria-5Hungary,bnt now a part of the State of'Ruman1a,anda prospective citizen of the United States, re

at Hartford, in the county otHartford and State ofConnectici t, have invented a new and useful Improvement in Autoinatic Feeds for Punch Presses, of whichthe following is a specification.

This invention relates to those mechanisms which, are designed to be applied tofp inch presses for automatically feeding strips of stock beneath the cutting punch by't'he downward movement of the ram that carries the punch. r The object ofthe'invention is to provide a mechanism of this class which is sin ple and cheap to construct, which can be readily applied to most of thecom non typeso f pnn'ch presses and which canjbe adjusted so as to accurately feed the required "distahcefstripsQ of indefinite length and width andth'ickness within the range of the particular mechanism. I In the accompanying drawings Fig. shows a plan of a mechanism which embodies the invention. Fig. eshws a side elevation lofthe san'ie. Fig. 3 showsan end elevation of the mechanism. Fig. i is'a transversesecti n 011 the'plane indicated by the dotted line on Fig. 2." Fig. 5 is a view looking toward the feed jaws carried by the slide wh c d nce fo ,feefii g the s ock, on thedo'wnward stroke of the ram.

be boltedto thetableot thepress with'wliich ranged to be reciprocated along the front face of the body above thetra'ck plate has a V shaped groove in its lower edge. Anti friction ballst are placed in the grooves he'- tween the track plate and slide for support ing the latter and a retaining plate 5 is fastened to the slide for keeping the balls I properly spaced. A clamped plate 6 which is' tastened to the top of the body reaches over the top edge of the slide for keeping the slide in position on the track. A spring "ZIlOCELted in a socket in the end of the slide and having one end connected with the slide ,the' body. he body 1 1 c st ng atisjad ptedtod ve we? .1 ipiitot'ed eon e ifie t v q t er lten fia nted Feb.- 28, 92. 1

21- e i s .04;-

projecting from i the tody, draws the slide back. 011 the front 'end' of the slide "is V and the other end connected with a =pijn-8 lever 10 that is pivoted to theibody'and at its upper end has a .rearwardly extendedipin l lcarryinga roller 12 whio hisadapted to be engaged hythe ram or other movable part of the press to which the mechanism is .31).?

plied. Thelever desirably has several pivot holes 1-3 Sp thatitsjactive length can be i i ried when necessary.- A link 14 connects-the lever and-the'TslideQ At its upper end'th'e link is pivotally fastened to the lever, and at itslower endtheli k isiyieldably and adjilst ably, "pivota'lly connected with the slide. The

lower end of the link has" a transve =se slot 1 and longitudinal socket, a bolt 1-5 extending throughi the slot with 1 its head 16 lying in 'a T shaped mortise in the front face'of the slide! ,Onthe-bolt' is a sleeve 17 a'Iijdsecured to; the outer'end of the bolt is a nu fti -IS. WVhen the nut isloosened the position ofthe bolt along the slidjemaybe changed for varying the pivotahpoint of connectionof the link with the slide. a blockle is: tiltiangedfin the slot to bear against the sleeve on the bolt and" a spring 201s located 'infthe socket so as tothrilst againstthe 'block and normally keep the 'pivot bolt in-the lower end ofthe'slot; -On thexlower cornerof 'the link is a roll 21 that is designed to riinon the upper edge of a" guide plate 22which isiadjn'stablyiastenechhybolts 23 to the :fr'ontpf Theslide at its rear rais'edgendcarries a square bar 24 and adjustably fastened on tlii's bar is'a' downwardly ext-ending a'rm*25. Secured to this ar m so tliat'it niay beiadjnsted upand down, is a plate 2 6ipivoted upon which are a pair of toothed feed jaWsf-Q'I. These jaws are eccentrically -'mounted and springs 28 are arranged tojtlirn'them toward each other. :Thefefdjiiwsarehsomoiinted that, wl1en1the "slide is retracted l they 'will slide over thestrip of stock whichextends between them. hut'when'the slide "forced forward "the jaws will close iipon the stock and feed it.

The body at its raised front end carries a sqnare bar 29 and adj ist ably secnred to this bar is a downwardly extending arm '31); Itas- Qtened on this arm so that it may be adjnsted plate, and the, spring in the jendfof the link slide, and al tonthebody. i g h -2. Anautoma'tic feeds for attachment to closed by springs 83. The-holding jaws are similar to and are mounted the same as the feeding jaws and they close upon and hold" the stock when the feeding jaws are re-'" tracte'd for more stock." Any desired num ber of arms carrying jawsmay be located upon the bars which project from the slide and; from the body. The jaws are raised up and down to carry the stock at the required level and they are adjusted on the bar-to ward the frontand back, so'that the stock will be in the proper line. Y

Facing the hardened plate 'on the front end of the slide is a stop screw 34 which is turned through Jathreaded opening in the boss 35; forming a part of the body for engaging the plate and stopping the slide when it has fed the stock into exact position. The guideplate"22 is located so that when the slide is feeding stock the roll 21 will run upon the upper edge of the plate but'when thestock has'been properly fed -andthe slide is stopped; by the, stopscrew, the roll will run down the'inclined end 36 of the willyield so that the parts willnot become damaged by the continued downward movementiof the. ram after. the stock has been stopped in theeXact position and the punch descends further for piercing the stock.

The invention claimed is:

11.;An automatic feed for attachment to punch presses comprising a body,a track plate fastenedto the front face of thjebody, a slide movable along said track, means for retaining the slide on the track against the body, aspring.forfretracting the slide, a lever pivoted to the bodyand provided with meansadapted to 'be engaged by a part of "the press to which the mechanismis to be applied; a link, pivoted to the -lever and 'yieldably and adjustably connected with the slide, a pair of feed jaws carried by said pair of holding jawsmounted punch presses comprising a body, track plate fastened to the front face, of the body,

a slide movable along saidtrack, means for retaining the slideonthe track against the ,body a spring forxretracting the slide, a 'lever, pivoted to the gbody and, provided with means adapted to be engaged by apart of the p ressto which themeichanisrn is to be applied, a link pivoted to the lever and yieldablycand adjustably, connected with the slide,

a screw turning in the body for stopping the feed of the slide, a pair of feed jaws carried by said slide, and a pair of holding jaws mounted on the body.

punch pressescomprising abody, a track plate fastened to the front face of the body,

3. An automatic feed for attachment to a slide movable along said track, means for retaining the slide on the track against the body, a spring for retracting the slide, a lever pivoted to the body and provided with means adapted to be engaged by a part of the press to which the mechanism is to be applied, "a"link pivoted to the lever, va) bolt adjustably connected with the slide, said link being y'ieldably connected with the slide, a pair of feed aws carried by said slide and a pairof holding jaws mounted on the body.

4. Anautomatic feed for attachment to punch presses comprising a body, a track plate fastened to the front face of thejbody,

a .slide movable along said track, means for retaining the slide on the track against the body, a sprin for retractingthe slide, a lever ivoted to the body and providedwith means adapted to be engaged by a part of the press plate. fastened tothe front face of thebody,

a slideImovable'along said track, 'a spring for retracting the slide, a leverpivoted to the body andprovided with'a roller that is adapted. to be engaged by apart of the press to which the, mechanism is to be applied, r.

a link pivoted to the lever and yieldably and adjustably connected with the slide, a bar eXtending-rearwardly fromthe'slid'e, an arm extending downwardly from said bar, a pair of feed jaws v mounted on; said arm, a bar extending rearwa-rdly from the body, an arm a, pair 'ofholdingfjaws, mounted on said extending downwardly from said bar, and,

puiich presses comprising a body, a track plate fastenedto thefrontface of the body,

' a-slidemovahle alon'g'sai'd track, atspring for retracting the slide, a lever pivoted to the-body provided with a roller that is adapted to be engaged by a partof the press to which thewmechanism 1s to be applied, a link pivoted to the lever and yieldably and adjustablyfeonneoted withthe slide, a bar ex'tending-rearwardly, from the slide, an arm extending downwardly from said bar, a plate vertically adjustable on said arm, and a pair of feed jaws pivotally mounted on said plate.

7. An automatic feed for attachment to punch presses comprisinga body, a track plate fastened to the front face of the body,

r a slide movable along said track, a clamp plate for retaming the slide on the track against the body, a spring for retracting the slide, a lever pivoted to the body'and pro 6.; An automatic feed for attachment to vided with a rollerthat is adapted to be engaged by a part of the press to which the mechanism is to be applied, a link pivoted to the lever and yieldably and adjustably connected with the slide, a bar extending rearwardly from the slide, an arm extending downwardly from said bar, a plate vertically adjustable on said arm, and a pair of feed jaws pivotally mounted on said plate.

8. An automatic feed for attachment to punch presses comprising a body, a track plate fastened to the front face of the body,

a slide movable along said track, a clamp plate for retaining the slide on the track against the body, anti-friction balls arranged between the track and slide, a spring for retracting the slide, a lever pivoted to the body and provided with a roller that is adapted to be engaged by a part of the press to which the mechanism is to be applied, a link pivoted to the lever and yieldably and adj ustably connected with the slide, a bar extending rearwardly from the slide, an arm extending downwardly from said bar, a plate vertically adjustable on said arm and a pair of feed jaws pivotally mounted on said plate.

9. An automatic feed for attachment to punch presses comprising a body, a track plate fastened to the front face of the body, a slide -movable along said track, a clamp plate for retaining the slide on the track against the body, anti-friction balls arranged between the track and slide, a'plate fastened to the slide for retaining the balls in position, a spring for retracting'the slide, a lever pivoted to the body and provided with a roller that is adapted to be engaged by a part of the press to which the mechanism is to be applied, a link pivoted to the lever and yieldably and adjustably connected with the slide, a bar extending rearwardly from the slide, an arm extending downwardly from said bar, a plate vertically adjustable on said arm and a pair of feed jaws pivotally mounted on said plate.

10. An automatic feed for attachment to punch presses comprising a body, a track plate fastened to thefront face of the body, a slide movable along said track, a clamp plate for retaining the slide on the track against the body, anti-friction balls arranged between the track and slide, a plate fastened to the slide for retaining'the balls in position, a spring for retracting the slide, a lever pivoted to the body and provided with a roller that is adapted to be engaged by a part of the press to which the mechanism is to be applied, a link pivoted to the lever and yieldably and adjustably connected with the slide, a bar extending rearwardly from the slide, an arm extending downwardly from said bar, a plate vertically adjustable on said arm, a pair of feed jaws pivotally mounted on saidplate, and a set screw turning through the body into the path of the slide.

'11. An automatic feed for attachment to punch presses comprising a body, a track plate fastened to the front face of the body, a slide movable along said track, a clamp plate for retaining the slide on the track against the body, anti-friction balls arranged between the track and slide, a plate fastened to the slide for retaining the balls in position, a spring for retracting the slide, a lever pivoted to the body and provided with a roller that is adapted to be engaged by a part of the press to which the mechanism is to be applied, a link pivoted to the lever and yieldably and adjustably connected with the slide, a guide plate for the lower end of the link adjustably fastened to the face of the body, a bar extending rearwardly from the slide, an arm extending downwardly from said bar, a plate vertically adjustable on said arm, a pair of feed jaws pivotally mounted on said plate, and a set screw turning through the body into the path of the slide.

12. An automaticfeed for attachment to punch presses comprising a body, a track plate fastened to the front face of the body, a slide movable along said track, a clamp plate for retaining the slide on the track against the body, anti-friction balls arranged between the track and slide, a plate fastened to the slide for retaining the balls in position, a spring for retracting the slide, a lever pivoted to the body and provided with a roller that is adapted to be engaged by a part of the press to which the mechanism is to be applied, a link pivoted to the lever and yieldably and adjustably con nected with the slide, a guide plate for the lower end of the link adjustably fastened to the face of the body, a bar extending rearwardly from the slide, an arm extending downwardly from said bar, a plate vertically adjustable on said arm, a pair of feed jaws pivotally mounted on said plate, a bar extending rearwardly from the body, an arm 

